This is a list of the longest regular season losing streaks in National Basketball Association (NBA) history. Streaks started at the end of one season are carried over into the following season. The Detroit Pistons and the Philadelphia 76ers are tied for the longest ever losing streak, losing 28 straight games. The 2023–24 Detroit Pistons have the longest losing streak in a single season, while the Philadelphia 76ers lost 28 consecutive games across two seasons: 2014–15 and 2015–16.[1]